Cenozoic coccolith size changes-Evolutionary and/or ecological controls?

Palaeogeography, Palaeoclimatology, Palaeoecology

Volumn 333-334, Issue , 2012, Pages 92-106

  Herrmann, Sandra ^a,b   Thierstein, Hans R ^a,c  

^a GEOLOGICAL INSTITUTE   (Switzerland)

^b TEXAS A AND M UNIVERSITY   (United States)

^c UNIVERSITY OF ZURICH   (Switzerland)

Author keywords

Automated biometry; Cenozoic; Coccolith size; Macroecology; Macroevolution

Indexed keywords

BIOMETRY; CENOZOIC; COCCOLITH; DEEP SEA; DEVELOPMENTAL BIOLOGY; EXTINCTION; FOSSIL RECORD; HOLOCENE; NEOGENE; PALEOENVIRONMENT; PROXY CLIMATE RECORD; QUANTITATIVE ANALYSIS; TAXONOMY;

CALCIDISCUS; CHIASMOLITHUS; COCCOLITHUS; CRUCIPLACOLITHUS; EMILIANIA; GEPHYROCAPSA; HELICOSPHAERA; RETICULOFENESTRA; RETICULOFENESTRA MINUTULA;

EID: 84860481850     PISSN: 00310182     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.palaeo.2012.03.011     Document Type: Article

References (98)

1. Aubry M.-P. A major Pliocene coccolithophore turnover: change in morphological strategy in the photic zone. Geological Society of America Special Papers 2007, 424:25-51.
2. Backman J. Miocene-Pliocene nannofossils and sedimentation rates in the Hatton-Rockall Basin. NE Atlantic Ocean. Stockholm Contributions in Geology 1980, 32:1-91.
3. Backman J., Hermelin J.O.R. Morphometry of the Eocene nannofossil Reticulofenestra umbilicus lineage and its biochronological consequences. Palaeogeography, Palaeoclimatology, Palaeoecology 1986, 57:103-116.
4. Barrera E., Huber B.T. Paleogene and early Neogene oceanography of the Southern Indian Ocean: Leg 119 foraminifer stable isotope results. Proc. ODP, Sci. Res. 1991, 119:693-717. Ocean Drilling Project, College Station, TX. J. Barron, B. Larson (Eds.).
5. Barrera E., Huber B.T., Savin S.M., Webb P.N. Antarctic temperatures: Late Campanian through Early Paleocene. Paleoceanography 1987, 2:21-47.
6. 2 decline during the Pliocene intensification of Northern Hemisphere glaciations. Paleoceanography 2011, 10.1029/2010PA002055.
7. Berggren W.A., Kent D.V., Swisher C.C.I., Aubry M.-P. Geochronology, time scales and global stratigraphic correlation. Spec. Publ. Society for Sedimentary Geology 1995, 54:129-212. Tulsa, OK.
8. Biolzi M. Stable isotopic study of Oligocene-Miocene sediments from DSDP Site 354, Equatorial Atlantic. Marine Micropaleontology 1983, 8:121-139.
9. Blaj T., Henderiks J. Smear and spray preparation techniques put to the test (II): reproducibility and accuracy of calcareous nannofossil assemblage counts. Journal of Nannoplankton Research 2007, 29:92-100.
10. Bollmann J., Baumann K.-H., Thierstein H.R. Global dominance of Gephyrocapsa coccoliths in the late Pleistocene: selective dissolution, evolution, or global environmental change?. Paleoceanography 1998, 13:517-529.
11. Bollmann J., Brabec B., Cortés M.Y., Geisen M. Determination of absolute coccolith abundance in deep sea sediments by spiking with microbeads and spraying (SMS-method). Marine Micropaleontology 1999, 38:29-38.
12. Bollmann J., Quinn P.S., Vela M., Brabec B., Brechner S., Cortés M.Y., Hilbrecht H., Schmidt D.N., Schiebel R., Thierstein H.R. Automated particle analysis: calcareous microfossils. Developments in Paleoenvironmental Research 2004, 7:229-252.
13. Bornemann A., Aschwer U., Mutterlose J. The impact of calcareous nannofossils on the pelagic carbonate accumulation across the Jurassic-Cretaceous boundary interval. Palaeogeography, Palaeoclimatology, Palaeoecology 2003, 199:187-228.
14. Bown P.R., Young J.R. Introduction. British Micropalaeontological Society Publication Series 1998, 1-15. Chapman & Hall, University Press, Cambridge. P.R. Bown (Ed.).
15. Bown P.R., Lees J.A., Young J.R. Calcareous nannoplankton evolution and diversity trough time. Coccolithophores-From Molecular Processes to Global Impact 2004, 481-508. Springer, Berlin. H.R. Thierstein, J.R. Young (Eds.).
16. Bramlette M.N., Sullivan F.R. Coccolithophorids and related nannoplankton of the early Tertiary in California. Micropaleontology 1961, 7:129-188.
17. Bukry D. Cenozoic calcareous nannofossils from the Pacific Ocean. Transactions of the San Diego Society Natural History 1971, 16:303-328.
18. Calder W.A. Size, function, and life history 1984, Harvard University Press, Cambridge.
19. Chaisson W.P., Leckie R.M. High-resolution planktonic foraminifer biostratigraphy of Site 806, Ontong Java Plateau (Western Equatorial Pacific). Proc. ODP, Sci. Res. 1993, 130:137-178. Ocean Drilling Project, College Station, TX. W.H. Berger, L.W. Kroenke, L.A. Mayer (Eds.).
20. Chaisson W.P., Pearson P.N. Planktonic foraminifer biostratigraphy at Site 925: Middle Miocene-Pleistocene. Proc. ODP, Sci. Res. 1997, 154:3-31. Ocean Drilling Project, College Station, TX. N.J. Shackleton, W.B. Curry, C. Richter, T.J. Bralower (Eds.).
21. Chaisson W.P., Ravelo A.C. Changes in upper water-column structure at Site 925, Late Miocene-Pleistocene: planktonic foraminifer assemblage and isotope evidence. Proc. ODP, Sci. Res. 1997, 154:255-268. Ocean Drilling Program, College Station, TX. N.J. Shackleton, W.B. Curry, C. Richter, T.J. Bralower (Eds.).
22. Corfield R.M., Cartlidge J.E. Oxygen and carbon isotope stratigraphy of the middle Miocene, Holes 805B and 806B. Proc. ODP, Sci. Res. 1993, 130:307-322. Ocean Drilling Project, College Station, TX. W.H. Berger, L.W. Kroenke, L.A. Mayer (Eds.).
23. Crudeli D. Behind the increase in size of small Gephyrocapsa: the earliest adaptive radiation of the populations (early Pliocene, South Caribbean Sea). Early Pliocene evolution of coccolithophores in the Caribbean Sea: taxonomy, biostratigraphy, paleoecology and paleoceanography. Kiel 2005, 72-105. D. Crudeli (Ed.).
24. Curry W.B., Shackleton N.J., Richter C. Proc. ODP, Init. Repts. 1995, 154. Ocean Drilling Program, College Station, TX. 10.2973/odp.proc.ir.154.1995.
25. De Graciansky P.C., Poag C.W., Cunningham R., Loubere P., Masson D.G., Mazzullo J.M., Montadert L., Mueller C., Otsuka K., Reynolds L.A., Sigal J., Snyder S.W., Townsend H.A., Vaos S.P., Waples D., Bailey M.G. Initial Report of the Deep Sea Drilling Project covering Leg 80 of the cruise of the drilling vessel Glomar Challenger, Brest, France, to Southampton, United Kingdom 1985, DSDP Deep Sea Drilling Project, College Station, TX.
26. Dowsett H.J., Loubere P. High resolution late Pliocene sea-surface temperature record from the Northeast Atlantic Ocean. Marine Micropaleontology 1992, 20:91-105.
27. Gallagher L. Reticulofenestra: a critical review of taxonomy, structure and evolution. British Micropalaeontological Society Series 1989, 41-75. Ellis Horwood, Chichester. J.A. Crix, S.E. Van Heck (Eds.).
28. Gaspari J.T., Kennett J.P. Miocene planktonic foraminifers at DSDP Site 289: depth stratification using isotopic differences. Proc. ODP, Sci. Res. 1993, 130:323-332. Ocean Drilling Project, College Station, TX. W.H. Berger, L.W. Kroenke, L.A. Mayer (Eds.).
29. Glasbery C.A., Horgan G.W. Image analysis for the biological sciences 1995, John Wiley & Sons, Inc., New York.
30. Groeneveld J., Nürnberg D., Tiedemann R., Reichart G.-J., Steph S., Reuning L., Crudeli D., Mason P. Foraminiferal Mg/Ca increase in the Caribbean during the Pliocene: Western Atlantic Warm Pool formation, salinity influence, or diagenetic overprint?. Geochemistry, Geophysics, Geosystems 2008, 9. Q01P23. 10.1029/2006GC001564.
31. Haq B.U., von Rad U., O'Connell S., et al. Proc. ODP, Init. Repts. 1990, 122. College Station, TX (Ocean Drilling Program). 10.2973/odp.proc.ir.122.1990.
32. Haq B.U., Boyd R.L., Exon N.F., von Rad U. Evolution of the central Exmouth Plateau: a post-drilling perspective. Proc. ODP, Sci. Res. 1992, 122:801-816. Ocean Drilling Program, College Station, TX. U. von Rad, B.U. Haq (Eds.).
33. Haug G.H., Tiedemann R., Zahn R., Ravelo A.C. Role of Panama uplift on oceanic freshwater balance. Geology 2001, 29:207-210.
34. Henderiks J. Coccolithophore size rules-reconstructing ancient cell geometry and cellular calcite quota from fossil coccoliths. Marine Micropaleontology 2008, 67:143-154.
35. 2. Earth and Planetary Science Letters 2008, 269:575-583.
36. Henderiks J., Rickaby R.E.M. A coccolithophore concept for constraining the Cenozoic carbon cycle. Biogeosciences 2007, 4:323-329.
37. Henderiks J., Törner A. Reproducibility of coccoliths morphometry: evaluation of spraying and smear slide preparation techniques. Marine Micropaleontology 2006, 58:207-218.
38. Herrmann S., Weller A.F., Henderiks J., Thierstein H.R. Global coccolith size variability in Holocene deep-sea sediments. Marine Micropaleontology 2012, 82:1-12.
39. Holligan P.M., Violler M., Harbour D.S., Camus P., Champagne-Philippe M. Satellite and ship studies of coccolithophore production along a continental-shelf edge. Nature 1983, 304:339-342.
40. Holligan P.M., Fernández E., Aiken J., Balch W.M., Boyd P., Burkill P.H., Finch M., Groom S.B., Malin G., Muller K., Purdie D.A., Robinson C., Trees C.C., Turner S.M., van der Wal P. A biogeochemical study of the coccolithophore, Emiliania huxleyi, in the North Atlantic. Global Biogeochemical Cycles 1993, 7:879-900.
41. Jablonski D., Benton M.J., Gastaldo R.A., Marshall C.R., Sepkoski J.J. Macroevolution in the 21st Century. Paleontology in the 21st Century Workshop: International Senckenberg Conference, Kleine Senckenbergreihe 1997, 25. H.R. Lane, J. Lipps, F.F. Steininger, W. Ziegler (Eds.).
42. Kameo K. Late Pliocene Caribbean surface water dynamics and climatic changes based on calcareous nannofossil records. Palaeogeography, Palaeoclimatology, Palaeoecology 2002, 179:211-226.
43. Kameo K., Bralower T.J. Neogene calcareous nannofossil biostratigraphy of Sites 998, 999, and 1000, Caribbean Sea. Proc. ODP, Sci. Res. 2000, 165:3-17. Ocean Drilling Program, College Station, TX. R.M. Leckie, H. Sigurdsson, G.D. Acton, G. Draper (Eds.).
44. Kameo K., Sato T. Biogeography of Neogene calcareous nannofossils in the Caribbean and the eastern equatorial Pacific-floral response to the emergence of the Isthmus of Panama. Marine Micropaleontology 2000, 39:201-218.
45. Keigwin L.D. Isotopic paleoceanography of the Caribbean and East Pacific: role of Panama uplift in Late Neogene time. Science 1982, 217:350-353.
46. 18O enrichment beginning at 3.1Ma. Proc. DSDP, Init. Repts. 1987, 94:911-920. Ocean Drilling Project, College Station, TX. F. Robinson, S.A. Salehipour, T. Takayama, E. Thomas, G. Unsold, P.P.E. Weaver, S. Orlofsky (Eds.).
47. Keller G., Adatte T., Tantawy A.A., Berner Z., Stinnesbeck W., Stueben D., Leanza H.A. High stress late Maastrichtian-early Danian palaeoenvironments in the Neuquén Basin, Argentina. Cretaceous Research 2007, 28:939-960.
48. Knappertsbusch M. Geographic distribution of modern coccolithophorids in the Mediterranean Sea and morphological evolution of Calcidiscus leptoporus. Diss. ETH Nr. 9169, Zuerich 1990.
49. Knappertsbusch M. Morphological evolution of the coccolithophorid Calcidiscus leptoporus from the early Miocene to recent. Journal of Paleontology 2000, 74:712-730.
50. Kroenke L.W., Berger W.H., Janecek T.R., et al. Proc. ODP, Init. Repts. 1991, 130:5-13. Ocean Drilling Project, College Station, TX.
51. 18O records. Paleoceanography 2005, 20:PA1003. 10.1029/2004PA001071.
52. 2 and its subsequent decline. Science 2006, 313:1928.
53. Lyle M., Barron J., Bralower T.J., Huber M., Olivarez Lyle A., Ravelo A.C., Rea D.K., Wilson P.A. Pacific ocean and Cenozoic evolution of climate. Reviews of Geophysics 2008, 46. 10.1029/2005RG000190.
54. McIntyre T.C., Bé A.W.H., Preikstas R. Coccoliths and the Pliocene-Pleistocene boundary. Progress in Oceanography 1967, 3-25. Pergamon, New York. M. Sears (Ed.).
55. Miller K.G., Fairbanks R.G., Thomas E. Benthic foraminiferal carbon isotopic records and the development of abyssal circulation in the eastern North Atlantic. Proc. DSDP, Init. Repts. 1987, 94:981-996. Ocean Drilling Project, College Station, TX. F. Robinson, S.A. Salehipour, T. Takayama, E. Thomas, G. Unsold, P.P.E. Weaver, S. Orlofsky (Eds.).
56. Miller K.G., Wright J.D., Brower A.W. Oligocene to Miocene stable isotope stratigraphy and planktonic foraminifer biostratigraphy of the Sierra Leone Rise (DSDP Site 366 and ODP Site 667). Proc. ODP, Sci. Res. 1989, 108:279-294. Ocean Drilling Program, College Station, TX. W. Ruddiman, M. Sarnthein (Eds.).
57. Nitsuma N., Oba T., Okada M. Oxygen and carbon isotope stratigraphy at site 723, Oman Margin. Proc. ODP, Sci. Res. 1991, 117:321-341. Ocean Drilling Project, College Station, TX. W.L. Prell, N. Niitsuma (Eds.).
58. Pagani M., Zachos J.C., Freeman K.H., Tipple B., Bohaty S. Marked decline in atmospheric carbon dioxide concentrations during the Paleogene. Science 2005, 309:600-603.
59. Pearson P.N., Palmer M.R. Atmospheric carbon dioxide concentrations over the past 60million years. Nature 2000, 406:695-699.
60. Pearson P.N., Ditchfield P.W., Singano J., Harcourt-Brown K.G., Nicholas C.J., Olsson R.K., Shackleton N.J., Hall M.A. Warm tropical sea surface temperatures in the Late Cretaceous and Eocene epochs. Nature 2001, 413:481-487.
61. Perch-Nielsen K. Cenozoic calcareous nannofossils. Plankton stratigraphy 1985, 427-554. Cambridge University Press, Cambridge. H.M. Bolli, J.B. Saunders, K. Perch-Nielsen (Eds.).
62. Prentice M.L., Matthews R.K. Cenozoic ice-volume history: development of a composite oxygen isotope record. Geology 1988, 16:963-966.
63. 18O from Site 807: implications for global ice volume and western equatorial Pacific sea-surface temperatures. Proc. ODP, Sci. Res. 1993, 130:281-305. Ocean Drilling Project, College Station, TX. W.H. Berger, L.W. Kroenke, L.A. Mayer (Eds.).
64. Quinn P.S., Cortés M.Y., Bollmann J. Morphological variation in the deep ocean-dwelling coccolithophore Florisphaera profunda (Haptophyta). European Journal of Phycology 2005, 40:123-133.
65. Rasband W.S. ImageJ 1997-2009, U.S. National Institute of Health, Bethesda, Maryland, USA. http://rsb.info.nih.gov/ij/.
66. Rea, D.K., Lohmann, K.C., MacLeod, N.D., House, M.A., Hovan, S.A., Martin, G.D., 1991. Oxygen and carbon isotopic records from the ooze of Sites 752, 754, 756, and 757. In: Shackleton, N.J., Hall, M.A. 1995. Stable isotope records in bulk sediments (Leg 138). In: Weissel, J., Peirce, J., Taylor, E., Alt, J. (Eds.), Proc. ODP, Sci. Res. 121, College Station, TX, pp. 229-240.
67. Resig J., Buyannanonth V., Roy K. Foraminiferal stratigraphy and depositional history of the Ontong Java Plateau. Deep Sea Research 1976, 23:441-456.
68. Ress A.P., Malcom E., Woodward S., Robinson C., Cummings D.G., Tarran G.A., Joint I. Size-fractionated nitrogen uptake and carbon fixation during a developing coccolithophore bloom in the North Sea during June 1999. Deep Sea Research Part II 2002, 49:2905-2927.
69. Rogalla U., Andruleit H. Precessional forcing of coccolithophore assemblages in the northern Arabian Sea: implications for monsoonal dynamics during the last 200,000years. Marine Geology 2005, 217:31-48.
70. Romein A.J.T. Lineages in early Paleogene calcareous nannoplankton. Utrecht Micropleontological Bulletins 1979, 22:1-231.
71. Samtleben C. Pliocene-Pleistocene coccolith assemblages from the Sierra Leone Rise-Site 366, Leg 41. Proc. DSDP, Init. Rept. 1978, 41:913-931. Ocean Drilling Program, College Station, TX, supplement.
72. Samtleben C. Die Evolution der Coccolithophoriden-Gattung Gephyrocapsa nach Befunden im Atlantik. Paläontologische Zeitschrift 1980, 54:1-130.
73. Sato T., Yuguchi S., Takayama T., Kameo K. Drastic change in the geographical distribution of the cold-water nannofossil Coccolithus pelagicus (Wallich) Schiller at 2.74Ma in the late Pliocene, with special reference to glaciation in the Arctic Ocean. Marine Micropaleontology 2004, 52:181-193.
74. Schmidt D.N., Thierstein H.R., Bollmann J. The evolutionary history of size variation of planktic foraminiferal assemblages in the Cenozoic. Palaeogeography, Palaeoclimatology, Palaeoecology 2004, 212:159-180.
75. Schmiedl G., Mackensen A. Late Quaternary paleoproductivity and deep water circulation in the eastern South Atlantic Ocean: evidence from benthic foraminifera. Palaeogeography, Palaeoclimatology, Palaeoecology 1997, 130:43-80.
76. Schneider R.R., Müller P.J., Acheson R. Atlantic alkenone sea-surface temperature-records. Low versus mid latitudes and differences between hemispheres. Reconstructing ocean history: a window into the future 1999, 33-55. Plenum Publishers, New York. F. Abrantes, A.C. Mix (Eds.).
77. Shackleton N.J., Hall M.A. Stable Isotope records in bulk sediments (Leg 138). Proc. ODP, Sci. Res. 1995, 138:797-805. Ocean Drilling Project, College Station, TX. N.G. Pisias, L.A. Mayer, T.R. Janecek, A. Palmer-Julson, T.H. van Andel (Eds.).
78. Sheehan P.M., Fastovsky D.E. Major extinction of land-dwelling vertebrates at the Cretaceous-Tertiary boundary, eastern Montana. Geology 1992, 20:556-560.
79. Siesser W.G., Bralower T.J. Cenozoic calcareous nannofossil biostratigraphy on the Exmouth Plateau, eastern Indian Ocean. Proc. ODP, Sci. Res. 1992, 122:601-631. Ocean Drilling Project, College Station, TX. U. von Rad, B.U. Haq (Eds.).
80. Sigurdsson H., Leckie R.M., Acton G.D., et al. Proc. ODP, Init. Rep. 1997, 165. Ocean Drilling Program, College Station, TX.
81. Skelton P. Evolution: a biological and paleontological approach 1993, Addison-Wesley Publishing Company, Wokingham, UK.
82. Spencer-Cervato C. The Cenozoic deep-sea microfossil record: exploration of the DSDP/ODP sample set using the Neptune database. Paleontologica Electronica 1999, 2:1-22.
83. Steph S. Pliocene stratigraphy and the impact of Panama uplift on changes in Caribbean and tropical east Pacific upper ocean stratification (6-2.5Ma) 2005, University of Kiel, Kiel.
84. Steph S., Tiedemann R., Prange M., Groeneveld J., Nürnberg D., Reuning L., Schulz M., Haug G.H. Changes in Caribbean surface hydrography during the Pliocene shoaling of the Central American Seaway. Paleoceanography 2006, 21:PA4221. 10.1029/2004PA001092.
85. Thierstein H.R. Calcareous nannoplankton-Leg 26, Deep Sea Drilling Project. Init. Rep. DSDP 1974, 26:619-643. U.S. Govt. Printing Office, Wash. D.C. T.A. Davies, B.P. Luyendyk (Eds.).
86. Thierstein H.R. Terminal Cretaceous plankton extinctions: a critical assessment. Geol. Soc. Am. Spec. Paper 1982, 190:385-399. L.T. Silver, P.H. Schultz (Eds.).
87. Thierstein H.R., Okada H. The Cretaceous/Tertiary boundary event in the North Atlantic. Proc. DSDP, Init. Rept. 1979, 43:601-616. Ocean Drilling Program, College Station, TX. B.E. Tucholke, P.R. Vogt, I.O. Murdmaa, P. Rothe, R.L. Houghton, J.S. Galehouse, C.L. McNulty, H. Okada, J.W. Kendrick, K.R. Demark, I.N. McCave, A. Kaneps (Eds.).
88. Thierstein H.R., Woodward D.L. Paleontological, stratigraphic, sedimentological, geochemical, and paleogeographical data of upper Cretaceous and lowermost Tertiary sediment samples. SIO Rerference Series, San Diego 1981.
89. Van Andel T.H. Mesozoic/Cenozoic calcite compensation depth and the global distribution of calcareous sediments. EPSL 1975, 26:187-194.
90. Van der Wal P., Kempers R.S., Veldhuis M.J.W. Production and downward flux of organic matter and calcite in a North Sea bloom of the coccolithophore Emiliania huxleyi. Marine Ecology Progress Series 1995, 126:247-265.
91. Vincent E., Shackleton N.J., Hall M.A. Miocene oxygen and carbon isotope stratigraphy of planktonic foraminifers at Site 709 and 758, tropical Indian Ocean. Proc. ODP, Sci. Res. 1991, 121:241-252. Ocean Drilling Program, College Station, TX. J. Weissel, J. Peirce, E. Taylor, J. Alt (Eds.).
92. Waples D.W., Cunningham R. Leg 80 shipboard organic geochemistry. Proc. DSDP, Init. Rept. 1985, 80:949-968. U.S. Govt. Printing Office, Washigton. P.C. de Graciansky, C.W. Poag (Eds.).
93. Whitman J.M., Berger W.H. Pliocene-Pleistocene carbon isotope record, Site 856, Ontong Java Plateau. Proc. ODP, Sci. Res. 1993, 130:607-622. Ocean Drilling Project, College Station, TX. W.H. Berger, L.W. Kroenke, L.A. Mayer (Eds.).
94. Yan C.Y., Kroenke L.W. A plate tectonic reconstruction of the southwest Pacific, 0-100Ma. Proc. ODP, Sci. Res. 1993, 130:697-709. Ocean Drilling Project, College Station, TX. W.H. Berger, L.W. Kroenke, L.A. Mayer (Eds.).
95. Young J.R. Size variation of Neogene Reticulofenestra coccoliths from Indian Ocean DSDP cores. Journal of Micropalaeontology 1990, 9:71-85.
96. Young J.R., Geisen M., Cros L., Kleijne A., Sprengel C., Probert I., Oostergaard J. A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research 2003, (Special Issue 1):1-132.
97. Young J.R., Geisen M., Probert I. A review of selected aspects of coccolithophore biology with implications for paleodiversity estimations. Micropaleontology 2005, 51:267-288.
98. Zachos J.C., Pagani M., Sloan L., Thomas E., Billups K. Trends, rhythms, and aberrations in global climate 65Ma to present. Science 2001, 292:686-693.